基于地理国情普查数据的泸州市空间扩展监测

Urban Expansion Monitoring of Luzhou City Based on the Data of Geographic Conditions General Survey

基于2014年地理国情普查数据和历史遥感影像,对2010~2014年泸州城市空间扩展进行监测与分析。结果表明,泸州市中心城区由2010年的68.86 km2扩展到2014年的88.51 km2,年均扩展速度为7.31%;中心城区几何重心整体约向北偏西移动0.24 km,扩展模式总体上属于填充型,土地来源以人工堆掘地为主;中心城区紧凑度相对提高约20%,城市几何形状越来越规整;城市用地增长弹性系数为1.16、人口-城市扩展指数为1.31,表明中心城区土地城镇化快于人口城镇化。泸州市在今后的城镇化过程中,应加强空间管制、促进土地集约利用。

In this paper, the spatial expansion of Luzhou City was monitored and analyses from 2010 to 2014, based on the data of geographical conditions general survey and historical remote sensing images. The results showed that the area of Luzhou center City expanded from 68.86 km^2 in 2010 to 88.51 km^2 in 2014, expanding at the rate of 7.31% per year, by filled extension mode; The geometric center of Luzhou center City moved about 0.24 km to northwest; The compact degree of center city increased about 20%. Geometry of center city became more structured. Urban land growth elasticity coefficient of 1.31and population - urban expansion index of 1.16, which showed that center city＇ s land urbanization faster than the population urbanization. So, in the process of urbanization in the future, Luzhou City should strengthen space control, and promote more intensive utilization of land.